Triple junction perovskite solar cell hits 24.3% efficiency
An international research group created a triple-junction perovskite solar cell with an efficiency of 24.3% and a quasi-steady-state efficiency of 23.3%. The prototype cell, which has been independently certified by the US National Renewable Energy Laboratory (NREL), features rubidium/cesium mixed-cation inorganic perovskites with a bandgap of around 2.0 eV to suppress light-induced phase segregation.